Holmestrand, Norway: the world's first high-speed-rail station under rock.

A new 14 km double-track high-speed railway through the city of Holmestrand in Norway has greatly improved rail services on the Vestfold line since it opened in 2016. The city's new high-speed railway station is the first in the world to be built under rock. It is accessible by way of several access tunnels from a surface carpark and a public transport interchange. The station was designed to allow high-speed trains to pass at 250 km/h while passengers are standing on the platforms. This required careful management of aerodynamic forces and governed many aspects of design and construction. Special emphasis was also placed on safety, escape routes, ventilation and noise reduction. [ABSTRACT FROM AUTHOR]